Finally, we would like to discuss the results we obtained about the spacial curvature energy density. As already mentioned we get \(\Omega _k = -0.076 \pm 0.012\)  which excludes flat universe at 68% CL and points to a closed Universe (\(k=1\) ). Due to the rather small prior used to obtain this number, we now repeat the inference with a larger prior \(\Omega _k \in [-0.3,0.3]\) . The results can be seen on Fig. 2. Once again, when calculating for the full dataset with or without the R19 prior, we obtain values excluding flat universe. This has been reported already, for example by the Planck 2018 collaboration ([1]}) for CMB alone which found a preference for a closed universe at \(3.4\sigma \) . Also [2]}, using the CC, Pantheon, and BAO measurements concluded that negative \(\Omega _k\)  also relieves the \(H_0\)  tension.
